HYDROLOGY AND WATER QUALITY OF THE EDWARDS AQUIFER ASSOCIATED WITH BARTON SPRINGS IN THE AUSTIN AREA, TEXAS
- Permanent Link:
- HYDROLOGY AND WATER QUALITY OF THE EDWARDS AQUIFER ASSOCIATED WITH BARTON SPRINGS IN THE AUSTIN AREA, TEXAS
- Series Title:
- M. Slade, Raymond
Jr., E. Dorsey, Michael
L. Stewart, Sheree
- Publication Date:
- Subjects / Keywords:
- Water-Quality ( local )
Barton Springs ( local )
Underlying Aquifers ( local )
Ground-Water System ( local )
- serial ( sobekcm )
- Urban development over the Edwards aquifer in the Austin, Texas, area has
caused concerns about the availability and quality of water in the aquifer.
The study area, the Edwards aquifer that discharges to Barton Springs, includes
parts of Travis and Hays Counties and extends from the city of Kyle to the
Colorado River. A large part of the aquifer lies within the Austin metropolitan
area one of the fastest growing areas in the Nation. As of 1985, only about
30,000 people used water from the aquifer, however, according to recent official
city of Austin population projections, about 86,000 more people will be living
in the study area by the year 2000, many of whom will depend upon the aquifer
for water. Barton Springs, which discharges from the aquifer, serves as a
supplemental source of drinking water for Austin and as a major recreational
The aquifer is a karst system composed of limestone and dolomite of Cretaceous age. The water occurs in solution channels in the Edwards and Georgetown Limestones. Yields of adjacent wells often differ by as much as four
orders of magnitude. Storage within the aquifer is about 306,000 acre-feet, of
which about 31,000 acre-feet is within the "transient" part of storage the
change in volume occurring between high flow and the lowest known flow of
Barton Springs. The average specific yield of the aquifer is 0.017.
Within the study area, the Edwards aquifer covers 155 square miles, of
which about 151 square miles discharge to Barton Springs, and the remaining 4
square miles discharge to Cold and Deep Eddy Springs. The westernmost 79
percent of the aquifer is under water-table conditions, and the remaining 21
percent is under confined conditions. Three geologic sections are presented
in the report, as well as maps showing the altitudes of the base and the top
of the Edwards aquifer.
Recharge occurs predominantly along faults and fractures crossing six
creeks in the recharge area, which covers the westernmost 90 square miles of
the aquifer. Leakage probably occurs into the
- Original Version:
- USGS, Vol. 86-4036 (1986-01-01).
- Source Institution:
- University of South Florida Library
- Holding Location:
- University of South Florida
- Rights Management:
- This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.
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